When recently looking through Kickstarter, I came across the Luxafor, which is an RGB LED device created with the mission of letting your work colleagues know instantly if you’re available to talk, or if you’re busy concentrating on an important project and don’t want to be disturbed.

You simply attach the Luxafor to the back of your monitor or laptop screen, connect to it by USB or Bluetooth (depending on the version you buy), install a piece of software, and then have the ability to change the colour to green (available), or red (busy). You can also set custom options to have it alert you when you receive an email for example, and it can also work in conjunction with three different pieces of software (DeskTime, RescueTime, and OfficeTime) in auto-mode.

They have two versions on offer; one which connects via USB, and another which works wirelessly via Bluetooth and has a built-in battery.

Wired (USB) version:

Wireless (Bluebooth) version:

The wireless version seems to be around twice as expensive, but actually looks much nicer – I’m not a fan of having an extra cable to plug in which then trails up the back of your screen.